The Iron Man's alter-ego, Tony Stark, is played by Robert Downey Jr. The film The Avengers brings him together with some of Marvel Studio's biggest heroes.
Mark Ruffalo and Robert Downey Jr. star in The Avengers. The superhero collective features Thor, Iron Man, The Hulk, Captain America, Hawkeye and Black Widow.
Robert Downey Jr. has battled substance abuse problems for most of his life. But the actor's craft has never suffered. His talent has shown through in films such as Soapdish, Wonder Boys and Iron Man.